Grease-cup



W. W. DAVIS AND W. W. MACDONALD.

GREASE CUP. APFLICATION FILED AUG. I3., l9l9.

1,38 17,8091 l Patented June 14,1921.

AmRNlYS UNITED STATES" PATENT OFFICE,-

WILLIAM W. DAvIs AND WILLIAM W. MAenoNALn, or sAN FnAlvcIsco, oALIFonitIA.

GREASE-CUP.

To aZZ what 7, t may concer/rt Be it known that we, WILLIAM W. DAVIS and ILLiAM W. MACDONALD, citizens of the United States,residing at the city and -countyof San Francisco and State of California, have invented new and useful Improvements in Grease- Cups, of which the following is a specication.

This invention relates to a grease cup, and

particularly to improvements on the struc-' ture shown in a patent issued to us April 8rd, ,1917, No. 1,221,031, entitled Grease cup. y .j

One of the objects of the present invention is to provided a simple, cheaply manufactured compression grease cup which is particularly adapted for use on automobiles and other machineswhere accessibility and quick manipulation are important factors. Another object of the invention isto provide a bail for the vsupport of the cover and in conjunction therewith a plunger for the Another object of ejection of the grease. the invention is to provide a cover which is vertically adjustable with relation to the bail and in which is formed a recess Vfor the reception of the plunger; and, furthermore, to provide means for raising and lowering the plunger with relation to the grease cup and the cover independently of the cover. Another object of the invention is to provide a plunger packingrof novel construction'. Further objects will hereinafter appear.

" Having drawmgs: l l p Figure 1' is a central, Yvertlcal section reference to the accompanying through the grease' cup.

Fig. 2 is a side elevation ofthe s ame. j Referring to the drawingsin detail, A 1nldicates a grease cup, on the lower end of' lwhich is formed a threaded extension-.2.

` Formed in the threadedextension is a discharge opening 3, and formed at the upper' end of the cup is an annular inclined seat et other suitable support formed on or securedv to the cup. Y

Formed on the cover 5, is a threaded" extension 9, and formedon thebail is a cen- Vtral threaded opening for the reception of A y the threaded extension 9, thereby permit- "ting vertical adjustment of the cover with specification of Letters Patent; Patented June Application filed August 13, 1919. Serial No..317,187.

screw rod 10,1and secured on the lower end of the screw rodisa plunger which consists of a platell anda packing-disk 12. {,The

packing disk is in this 'instance constructed of thin sheet metal, such-as brass or ther like, and 1s provided with an annular downwardly extending flange 14, which' is resilient, due to the natureand thinness of the metal. Y l

A simple and Vefficient form of packing is 1n this manner provided which isself-adjustlng as it will automaticallytake up such wear as may take place, due to the fact that the'annula'r flangeis resilient and slightly cup. It is, therefore, forced into place when larger in diameter than the interior of the Y i first inserted and will gradually expand las wear takes place. By referring to Fig. `1 the lower edge-off the cover is tapered to V form a tight joint with the` seat 4, formed at the upper end of thef grease cup and that it will be seenthat` a chamber 15 is formed interiorly of the:

coverfor the receptionof'the plunger. This Y is important as it -permitsthe plunger, together with the cover, to be raised vertically w1th relation to the bail and permits swinging of the bail, the cover andl the'plungerl into the dotted line position shown a'ty 16, when the cup is tobe recharged 'or filled with grease. f 4

In actual means of this'handley it is possible' to turn the screw rod 10 to raise and lower the plunger. For instance, if'it is desired to fill the operation,jwe providea suitable form'of handle,such as shown at 17.' By

` cup it is accomplished by raisingthe plunger i to the position shownfin Fig. l' and then to turn the cover until theA raiseddotted line position is assumed, as shown at 18 (see Fig. 2).' The bail containing the cover and the plunger may thenbe swung into the dotted line position', shown v'at 16, thereby` leaving the open 'end ofthe cupiffreefand unobstructed for refilling. V- i When closing the cup it is only necessary toy swing the bail back into alinementmand to turn the cover 5 in theiroppo'site direction `1 a sufficient distance to cause it'totightly engage the seat 11.V The plunger is then lowered against the greaseto force it out through the discharge 'opening 'by merelyV turning the handle 17,' Practically any pressure V'may ,y

thus be applied to the grease as a comparatively lowt pitched thread may be employed4 if desired.

grease cup which may be raised and lowered vertically with relation thereto'or swung to one side, as shown in vFig.V 2; also that a plunger is provided which may be raised and `lowered in unison with the cover or independently 'thereof' or raised up in to the cover wherevit may be swung to one side in unison with the bail and cover, thereby leavunobstructed. Again, a novel form of metallic packing is provided,'which practically insures `against leakage; this being dueto the fact that the resiliency of the downturned annular flange-automatically takes up wear, thereby maintaining a tightV and what may be termed a ground joint.V rEhe escapeof grease between the cover and the cup'cannot take place as any grease which might pass bythe plunger and the packing disk carried thereby would only enter the space 15 Vformed in the cover and as it would not be lunder pressure 'when in the cover chamber, it can readily be seen Vthat i there would Ybe no tendency for leakage Y understood that various changes in the dethrough the seat formed between the cover andthe cup. Even leakage by gravity is avoided as the angular seat formed is downturned, thereby preventing such leakage.v

While a more or less specific structureis here shown, for instance, such as is usual for the mounting of thebail, we wish it sign, form and proportions may be resorted to within the scope of the appended claims, and also that' the materials and finish of the several parts employed may be such as the experience and judgment 'of the manufacturer may dictate or varying conditionsmay demand. f 1 f Having thus described our invention,'what we claim and desire to. secure by Letters Patent isl l. A grease ciip'comprising an open-ended cup having a discharge opening formed'at the opposite end thereof, a bail pivotallyV attached to the cup, a cover carried by the. bail and vertically adjustable therein, 'and-af plunger carriedby the cover and vertically I movable with'relation to the cover and cup j and adapted to belreceived in the cover.

2. A grease cup comprising an open-ended cup having a discharge opening formed at the opposite end thereof, a bail pivotally attached vto the cup, a cover carried by the bail and vertically adjustable therein, and a plunger carried by the cover and vertically adjustable with relation Ytothelcover andcup,

cup, a screw rod extending through the plunger independently of each other. ing the mouth of the grease cup free and I Y 5. A grease cup comprising a cup, `a bail pivotally mounted on the cup, a cover for the cup, a threaded ,extension on the cover extending through the bail to support' the cover and to permit vertical adjustment of the cover with relation to the bail and the cup, a screw rod extending through the threaded extension on the cover, means for turning the screw rod, and a plunger on the lower end of the screw rod within the cup.

g6. A grease cup comprising a cup, a bail pivotallyinounted on the cup1 a cover for the cup, Aa threaded extension on theicover extending-through the bail to support the cover and' to permit vertical adjustment of the cover with relation to the bail andthe threadedextension on the cover, vmeans for turning the' screw rod, a plunger on the lower end of the screw rod within the cup,

1 and a chamber formed in the cover into `which the plunger is adapted to bev raised.

7.' A grease cup comprising a cup, a bail pivotally mounted on the cup, a cover for the cup, a threaded extension on the cover extending4 through the bail to support the cover and to permit vertical adjustment of the cover with relation to the ,bail and the cup, a screw rod extending through the threaded extension on the cover, means for Vturning'th'e screw rod, ar plunger on the lower end of the screw rod within the cup,a cham- 110 Y'bei'. formed in the coverinto which the plunger is adapted to be raised, and a downwardly inclined seat formed on the cup for the reception of the cover. y

8; The combination with a plunger, of a 115 packing therefor, said packing comprising a vtliin metallicdisk slightly larger in diameter than the plunger, and a resilient continuous annular flange formed on the disk.

' 9. The combinationwith 'a plunger, of a 120 packing ftherefr, saidpacking comprising a thin metal disk constructed of spring metal,

`and a resilient spring-like annular iange #formed on the disk and having al diameter slightly larger than the plunger. lOA grease cup comprising an open ended cup having a discharge opening Y formed at the opposite Vend thereof, a bail 3. A grease cup comprising an open-ended cup having a discharge opening formed at p ivotallyattached tofthe cup, a cover carrldby-Ythe'balli aedverteally adjustable 1.30

therein, a screw rod carried by the cover and vertically adjustable with relation to the cover and cup, a disk secured on the lower end of the screw rod, and a thin metallic disk secured to the first namedV clislgsaid thin metallic kdisk being constructed of spring metal and provided with an annular downwardly turned rim, said rimhaving a diameter slightly larger than that of the first named disk. f

l1. The combination with a plunger, of a packing member therefor, said packing member comprising a thin metallic disk constructed of spring metal, said disk having a diameter slightly larger lthan the plunger, said disk beingV rigidly secured to the plunger and having its major surface contacting with and supported by the plunger, and a resilient continuous annular liange formed on the outer periphery of the disk.

12. A packing member of the character described comprising a thin metallic spring metal disk and a resilient continuous annu- Vlar flange formed on the disk, having an eX- WILLIAM W. DAVIS.

WILLIAM W. MACDONALD.

Vitnesses THOMAS CASTBERG,

W. W. HEALEY. 

